convincing defence

Not particularly convincing defence from Argentina.

It was a convincing defence.

I have heard within the last six months Brown and Balls give passionate and convincing defences of this when asked the same question.

He's undoubtedly intelligent, we know he's a thespian of some note and could put up a spirited and convincing defence in court.

Since then, other relatives of IRA victims have demanded answers, and McGuinness has had no convincing defence.